CLI Wrapper Changes:
- Converted aitbc-cli from bash wrapper script to direct symlink
- Symlink points to python3 /opt/aitbc/cli/aitbc_cli.py
- Simplified CLI invocation and removed wrapper overhead
CLI Command Enhancements:
- Added system status command with version and service info
- Added blockchain subcommands (info, height, block)
- Added wallet subcommands (backup, export, sync, balance)
- Added network subcommands (status